PROGRESSIVE weld SAMPLING welding qa/qc & project controls software PIPING PER ASME B31.3 para. 341.3 Log accepted inspections, YES RT or UT Accepted? Inspection and continue per standard process NO 341.3.4 (b) If the items examined as required by (a) are 341.3.4 (d) If the items examined as required by (c) are acceptable, the defective item shall be repaired or acceptable, the defective item shall be repaired or replaced & reexamined per 341.3.3. All items represented replaced & reexamined per 341.3.3. All items represented by these two additional samples shall be accepted by these two additional samples shall be accepted Tracer from the original designated Results lot shall be tested 341.3.4 (c) 2 Additional samples of the same kind, Tracer from the original designated Results 1 OR 2 samples of the same kind, lot shall be tested REJECTED 341.3.4 (a) 2 Additional 2 ACCEPTED 1 REJECTED PENALTY“ “TRACER OR 2 ACCEPTED All items shall be: 341.3.4 (e)(1) Repaired or replaced & fully reexamined 341.3.4 (e)(2) fully examined and repaired or replaced as necessary “TRACER OR PENALTY“ 2 REJECTED B31.3 341.3.3 Defective Components and Workmanship. fi acceptable by the criteria speci ed in para. 341.3.2) shall be repaired, or the defective item or work shall 341.3.4 (d) If the items examined as required by (c) PENALTY“ Defects (imperfections of a type or magnitude not “TRACER OR ASME 341.3.4 (c) 4 Additional samples of the same kind, from the original designated lot shall be tested are acceptable, the defective item shall be repaired or replaced & reexamined per 341.3.3. All items represented by these two additional samples shall be accepted . be replaced 4 ACCEPTED When the defective item or work is repaired, the examined. The examination shall use the same methods and acceptance criteria employed for the . Tracer Results original examination. See also para. 341.3.1(a) (b) When the defective item or work is replaced, the new item or work used to replace the defective item or work shall be examined. The examination shall use any method and applicable acceptance criteria that meet the requirements for the original examination. See also para. 341.3.1(a). FOR REFERENCE ONLY; SEE CURRENT ASME CODES & STANDARDS FOR OFFICIAL INFORMATION 1, 2, 3 OR (a) repaired portion of the item or work shall be 4 REJECTED Examination shall be as follows: All items shall be: 341.3.4 (e)(1) Repaired or replaced & fully reexamined 341.3.4 (e)(2) fully examined and repaired or replaced as necessary PROGRESSIVE weld SAMPLING welding qa/qc VESSEL PER ASME SECTION VIII DIVISION 1 RT or UT Inspection Increment Accepted? YES Per UW-52 (d)(1) Log information in system, and continue per standard process NO UW-52 (d)(2)(-a) If the items examined as required by UW-52 (d)(2) are acceptable, the defective item shall be repaired or replaced & reexamined per UW-52 (d)(2)(-c). All items represented by these two additional samples within the increment shall be accepted 2 ACCEPTED UW-52 (d)(2) Two additional spot RT or UT inspections within the same increment Tracer Results 1 OR 2 REJECTED “TRACER OR PENALTY“ ASME Section VIII Division 1 UW-52 SPOT EXAMINATION OF WELDED JOINTS. NOTE: Spot radiographing of a welded joint is recognized as an effective inspection tool. The spot radiography rules are also considered to be an aid to quality control. Spot radiographs made directly after a welder or an operator has completed a unit of weld proves that the work is or is not being done in accordance with a satisfactory procedure. If the work is unsatisfactory, corrective steps can then be taken to improve the welding in the subsequent units, which unquestionably will improve the weld quality. UW-52 (d)(2)(-b) The entire increment of weld is rejected Spot radiography in accordance with these rules will not ensure a fabrication product of predetermined quality level throughout. It must be realized that an accepted vessel under these spot radiography rules may still contain defects which might be disclosed on further examination. If all radiographically disclosed weld defects must be eliminated from a vessel, then 100% radiography must be employed. FOR REFERENCE ONLY; SEE CURRENT ASME CODES & STANDARDS FOR OFFICIAL INFORMATION & project controls software ASME Section VIII Division 1 UW-52 SPOT EXAMINATION OF WELDED JOINTS. (a) Butt welded joints which are to be spot radiographed shall be examined locally as provided herein. (b) Minimum Extent of Spot Radiographic Examination (1) One spot shall be examined on each vessel for each 50 ft (15 m) increment of weld or fraction thereof for which a joint efficiency from column (b) of Table UW-12 is selected. However, for identical vessels or parts, each with less than 50 ft (15 m) of weld for which a joint efficiency from column (b) of Table UW-12 is selected, 50 ft (15 m) increments of weld may be represented by one spot examination. (2) For each increment of weld to be examined, a sufficient number of spot radiographs shall be taken to examine the welding of each welder or welding operator. Under conditions where two or more welders or welding operators make weld layers in a joint, or on the two sides of a double‐welded butt joint, one spot may represent the work of all welders or welding operators. (3) Each spot examination shall be made as soon as practicable after completion of the increment of weld to be examined. The location of the spot shall be chosen by the Inspector after completion of the increment of welding to be examined, except that when the Inspector has been notified in advance and cannot be present or otherwise make the selection, the Manufacturer may exercise his own judgment in selecting the spots. (4) Radiographs required at specific locations to satisfy the rules of other paragraphs, such as UW-9(d), UW-11(a)(5)(-b), and UW-14(b), shall not be used to satisfy the requirements for spot radiography. (c) Standards for Spot Radiographic Examination. Spot examination by radiography shall be made in accordance with the technique prescribed in UW-51(a). The minimum length of spot radiograph shall be 6 in. (150 mm)....... CONTINUED........... Read the remainder from the code book to know and understand all the provisions of the code and how they apply to each situation.